The 22-year-old Keeping Up With The Kardashians star stunned at the event in Beverly Hills, wearing a princess-style Giambattista Valli black gown in homage to the Time's Up movement.
The model has since defended herself, when a fan tweeted a message of support.
See photos of Kendall Jenner on the red carpet in the gallery...
Luckily, Kendall is now more confident in her skin, but she says "it wasn't anything that happened overnight". She took her Instagram and wrote, "When I deleted my Instagram back in November, people were saying: 'Kendall deleted her account to have full facial reconstruction!' I think they might have been referencing the day Kylie and I did a livestream for our book".
But surprise, surprise, it appears that Kendall Jenner - a card-carrying, Vogue-certified supe - suffers from the oh-so-human affliction known as acne. As a model, why would I have my face reconstructed?
The runway star wrote in the October 2015 post: 'Where it really impacted me was how self-conscious I became about it. It completely ruined my self-esteem - I wouldn't even look at people when I talked to them.
Jenner joins a handful of other celebrities who have opened up to fans about the difficulties of acne and the unrealistic expectation of flawless skin. "I love you just the way you are ". "I felt like such an outcast; when I spoke, it was with my hand covering my face", she explained.
The model and reality star tweeted "never let that s**t stop you!" with a sunglasses-covered emoji and a star. "Even after things started to clear up, it took a solid amount of time to be okay with my skin and gain back my confidence. But slowly, I'm working towards not caring and I'm just in so much of a better place about it all now that I'm older".